benham



(No Model.) 2 Sheets-Sheet 1. E. B. BENHAM.

v MOTOR. No. 341,828. PatentedMay 11, 1886.

WITNESSES= INVENTOR ATTORNEY tlnrrn :2 arena met.

ELIJAH B. BENHAM, OF HOLYOKE, MASSACHUSETTS, ASSIGNOR TO ROSW'ELL M.FAIRFIELD, OF SAME PLACE.

MOTOR.

SPECIFICATION forming part of Letters Patent No, 341,828, dated May 11.1886.

Application filed October 5, 1885.

To aZZ whom it may concern:

Be it known that I, ELIJAH B. BENHAM, a citizen of the United States,residing at Holyoke, in the county of Hampden and Stateof Massachusetts,have invented new and useful Improvements in Motors, of which thefollowing is a specification.

This invention relates to improvements in motors, and is in the natureof an improvement upon the patents to Benham and Richardson,of April24-, 1883, No. 27 6,529, and July 28, 1885, No. 323,258, the objectbeing to simplify the construction shown in said patents by materiallyreducing the operative parts thereof, as hereinafter fully set forth.

In the drawings forming part of this specification, Figure l is a frontelevation, and Fig. 2 a side elevation, of the motor embodying myimprovements, the latter figure showing the standard or frame partspartly in section,

the cylinders and pistons removed, and the ring and its shaft-connectingbar partly broken away, and the side of the valve partly broken awayalso. Fig. 3 is a plan view of the cylinder-disk, the cylinders beingbroken off in part, showing its inner side. Fig. 4 is a front endelevation of the valve.

In the drawings, Ais aniron standard, forming the sole support for themachine, having a laterally-spreading base, as shown, through whichsuitable bolts may be put to secure the machine in any desired place orposition. Said standard is provided with a head, 12, which is perforatedhorizontally to form a valvechamber therein, a portion of which chamberis cylindrica1,as shown,and a portion of which, 14, is of enlargedconcave form, and the latternamed part of said chamber receives thewater or steam supply through the inductionpassage 11?, which is formedwithin standard A, its lower end, a, being suitably screw threaded toprovide for connecting a supplypipe therewith, the latter being broughtup under the base of the standard and completely concealed from viewthereby.

The cylindeedisk B is secured to the front or face side of the head 12by suitable bolts passing through bolt-holes in the latter, one ofwhich, 5, is shown in Fig. 2, and like holes in said disk. The rear endof head 12 has se- Slltl head and cap to make a tight joint.

Serial No. 178,999. (No 1no.lel.l

cured to it,by screwing or other suitable means, as shown, the cap K, asuitable packing-ring, 15, and packing 16 being interposed between Thecap K has a hole through its rear side to allow the shaft E to passthrough it, and a stuffingbox nut, J, on the latter is screwed againstsuitable packing in a stuffing-box in said cap, therebypreventingleakage around said shaft. The eduction-passage from thecylinders e through valve 1 is provided by the chamber 17 in the cap K,the under side of the latter having a screw-threaded opening, at,therein, which communicates with said chamber, and a suitable pipescrewed therein carries off the exhaust-steam. or water.

The valve y consists of a central cylindrical portion or shell having onits rear end the yoke 14, fron which projects rearwardly the shaft E,above referred to, on which is fixed the pulley H, on which a belt isput to connect the motor with machinery which it is to drive.

The front end of valve y is made of the form shown in Figs. 2 and 4, orof an enlarged flaring shape, and the end thereof, 13, is finished true,with circular spots z z thereon, to con stitute a bearing-face for thevalve, a diaphragm, 20, extending from one side of the latter to oneside of the shaft D, and closing said front end of the valve partially,as shown in Fig. 4, the said shaft D extending from the front end of thevalve in a line with the shaft E through the hole 10 in thecylinder-disk B, in which it has a suitable bearing; and when the latteris bolted to the head of the stand ard, as above described, the end ofvalve 9 on which is the aforesaid bearing-face, is

, chamber being free to enter such of said ports projecting above saidroll on each piston, be-

hind which said ring is engaged, provides means for holding the latterin proper position on the pistons. The said ring performs substantiallythe same functions in this construction as in the above-named patents,but with less number of intermediate devices between it and the pulleyH, as hereinafter described.

The crank-pin 0 is fixed in the side ofa halfdisk, (I, and to thestraight edge of the latter is bolted the strap 0, the end of shaft Dbeing so clamped. between said half-disk and strap as to firmly securethe cranlcpin to the shaft. The bar It is bolted to the ring w, asshown, and the crank-pin 0 has a suitable bearing therein.

By means of the improved construction of the motor above described it isseen that the said intermediate devices that are shown in said patentsbetween the ring and the pulley through which the motor imparts movementto machinery are largely dispensed with, and the valve 3 having theshaft D on one end and the shaft E on the opposite one, furnishes adirect means of transmitting the motion of the ring tothedriving-pulley, thus obviating all other outside connections. As insaid patents, rotary motion is given to the valve to, cause it tocontrol the proper entrance and discharge of water into and from thecylinders c, by means of the connection of the valve with the ringthrough the intermediary of the bar It and the crank-pin 0, andsubstantially said connection is shown in said patent of 1885; but inthe latter the ring has a connection separate from said bar with acrank-disk which is fixed on the end of the driving-shaft; butin thisconstruction the ring rides on the pistons and has only one otherconnectionviz., with the valve, and by extending the rear end of thelatter in the form of a shaft, E, through .the cap is the valve becomespractically the driving-shaft of the machine.

What I claim as my invention is- 1. In a motor, a series of fixedcylinders radiating from a common center, a standard to which saidseries of cylinders are fixed, having therein a valve-chamber with whichsaid cylinders communicate, induction and eduction passages,substantially as described, communicating with said chamber, a rotaryvalve located in said valve-chamber, having thereon a shaft extendingrearwardly to receive a driving-pulley, and a second shaft in a linewith the former extending forward between the converging ends of saidcylinders, a series of pistons in the latter, a ring encircling theouter ends of said pistons, with which the latter engage, a bar securedto said ring and ex tending transversely across it, and a crank securedto the latter and to the-end of said shaft which extends between theconverging ends of the cylinders, combined and operating substantiallyas set forth.

2. In a motor, the standard A, having the head 12, in which is thevalve-chamber, said standard having the induction-passage a thereincommunicating with said chamber, the cap K, secured to said head andhaving a shaftbearing therethrough, substantially as described, and thechamber 17 therein, having an eduction-passage leading therefrom,combined with the VZLlVQf. having a shaft on each end projecting throughopposite sides of the machine, the series of pistons c, the ring 10,engaging with thelatter, and thebar it, having a crank-connection,substantially as described, with one of said valve-shafts, all as setforth.

3. In a motor, a standard having a suitable head, substantially asdescribed, forming a support for the operating parts of the machine, andhaving a valve-chamber, and the induction-passage n thereincommunicating with said chamber, the series of cylinders e and pistonsa, secured to said standard-head, the hollow cap K, secured to thelatter opposite said cylinders and having an eduction-passage therefrom,the ring w, engaging with said pistons, the bar h, secured to said ring,combined with the hollow valve 3 provided with a shaft on its oppositeends, one of which passes through the cylinder-head and has acrankconnection with said bar, and the other ex tends through said capand serves as the driving-shaft of the machine, substantially as setforth.

' ELIJAH B. BENHAM. Witnesses:

H. A. CI-IAPIN,

WM. H. CHAPIN.

